#define compat_user_stack_pointer() current_pt_regs()->sp
#endif
-#ifdef CONFIG_X86_32
-extern unsigned long kernel_stack_pointer(struct pt_regs *regs);
-#else
static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
{
return regs->sp;
}
-#endif
#define GET_IP(regs) ((regs)->ip)
#define GET_FP(regs) ((regs)->bp)
if (unlikely(offset > MAX_REG_OFFSET))
return 0;
#ifdef CONFIG_X86_32
- /*
- * Traps from the kernel do not save sp and ss.
- * Use the helper function to retrieve sp.
- */
- if (offset == offsetof(struct pt_regs, sp) &&
- regs->cs == __KERNEL_CS)
- return kernel_stack_pointer(regs);
-
/* The selector fields are 16-bit. */
if (offset == offsetof(struct pt_regs, cs) ||
offset == offsetof(struct pt_regs, ss) ||
static inline int regs_within_kernel_stack(struct pt_regs *regs,
unsigned long addr)
{
- return ((addr & ~(THREAD_SIZE - 1)) ==
- (kernel_stack_pointer(regs) & ~(THREAD_SIZE - 1)));
+ return ((addr & ~(THREAD_SIZE - 1)) == (regs->sp & ~(THREAD_SIZE - 1)));
}
/**
*/
static inline unsigned long *regs_get_kernel_stack_nth_addr(struct pt_regs *regs, unsigned int n)
{
- unsigned long *addr = (unsigned long *)kernel_stack_pointer(regs);
+ unsigned long *addr = (unsigned long *)regs->sp;
addr += n;
if (regs_within_kernel_stack(regs, (unsigned long)addr))